6 ms·

> Also the .zfs/snapshot still doesnt work. What do you mean by this? I’m using ZoL and snapshots seem to be working fine.

stiray 6y ago
zfs has a feature where you can `cd` to hidden .zfs folder (you wont see it by `ls`, imagine it like /procfs but hidden) on root of zfs filesystem (if you have tank/whatever mounted to /whatever this would be /whatever/.zfs) with some interesting content: within .zfs/snapshot you will get a list of snapshots for that filesystem with materialized state (!!!) of fs when the snapshot was taken. Imagine (instead of rollback the snapshot), just copying the original file(s) from there, with content from the time when snapshot was created. This is imho, the killer feature of zfs, maybe matching only by VMS or DragonflyBSD hammer filesystems. They were/are both better at it (`undo`!) but zfs comes closely. And it is broken for months now.
- iotku 6y ago
  I haven't noticed that issue on Proxmox (been using zfs with it for approx. 6 months). Currently on zfs 0.8.4 (and I've done that previously). Are you using a distro supplied zfs (potentially old) or rolling something more bleeding edge?
  - stiray 6y ago
    Just for any case, I would really love to solve this, I accept the fact that it is connected with upgrading the modules but this just is no reason for breaking backward compatibility. root> zpool --version zfs-0.8.4-1 zfs-kmod-0.8.4-1 root> ll /.zfs/snapshot total 0 drwxrwxrwx 2 root root 2 jun 15 08:48 ./ drwxrwxrwx 1 root root 0 jun 10 07:53 ../ root> cat /etc/yum.repos.d/zfs.repo [zfs] name=ZFS on Linux for Fedora $releasever baseurl=http://download.zfsonlinux.org/fedora/$releasever http://download.zfsonlinux.org/fedora/$releasever /$basearch/ enabled=1 metadata_expire=7d gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-zfsonlinux [zfs-source] name=ZFS on Linux for Fedora $releasever - Source baseurl=http://download.zfsonlinux.org/fedora/$releasever/SRPMS/ http://download.zfsonlinux.org/fedora/$releasever/SRPMS/ enabled=0 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-zfsonlinux But nevermind, this is something that was working since zfs as root was brought into FreeBSD (and we are talking about FreeBSD not ZoL), never had issues about it.
- znpy 6y ago
  > And it is broken for months now. This guy speaks without knowing. I just tried going in my .zfs/snapshot on my CentOS 7 system running kernel 3.10 and ZoL 0.8.3 and it's working. I can list snapshots and cat file off a snapshot.
  - deleted 6y ago
    [deleted]
  - stiray 6y ago
    After 10+ years of using zfs, I just "might" know something... ;) While your 1 year old versions of ZoL just "might" not prove anything.
    - znpy 6y ago
      if you had actually been using it during the last 1.5/2 years you would know it work. otherwise you're just talking about stuff (zfs on gnu/linux) you know little about. if you use zfs on freebsd then good for you, but that doesn't mean you can spread disinformation about zfs-on-linux. btw: freebsd dropped its own implementation of zfs and is rebasing onto zfs-on-linux (from 2018: https://lists.freebsd.org/pipermail/freebsd-fs/2018-December/027085.html https://lists.freebsd.org/pipermail/freebsd-fs/2018-December...). that's how good zfs-on-linux is.
      - stiray 6y ago
        Just update your outdated ZoL to latest version. Than we can talk. And you might just agree.
        laumars 6y ago
        I run ZFS on both Linux and FreeBSD. On Linux I compile from the latest releases. I’ve honestly not noticed any issues either. Are you absolutely sure this isn’t something you’ve misconfigured yourself? For what it’s worth, I do prefer FreeBSD over Linux but not not for any reasons relating to ZFS.
  - 6y ago
- eqvinox 6y ago
  $ cat /saspool/debian/master-buster/.zfs/snapshot/ci/etc/issue Debian GNU/Linux 10 \n \l ZFS 0.8.4 on Linux 5.4.43 — just as a data point in case you're trying to track this down. Both built from source, no distro patches. (Yes my "tank" is named "pool"; /saspool/debian/master-buster is a template for my containers, "ci" is one of the containers.)
- layoutIfNeeded 6y ago
  Works for me on Debian Unstable... sudo zpool --version zfs-0.8.4-1 zfs-kmod-0.8.4-1 uname -a Linux xxx 5.6.0-2-amd64 #1 SMP Debian 5.6.14-1 (2020-05-23) x86_64 GNU/Linux
deleted 6y ago
[deleted]

stiray 6y ago

zfs has a feature where you can `cd` to hidden .zfs folder (you wont see it by `ls`, imagine it like /procfs but hidden) on root of zfs filesystem (if you have tank/whatever mounted to /whatever this would be /whatever/.zfs) with some interesting content: within .zfs/snapshot you will get a list of snapshots for that filesystem with materialized state (!!!) of fs when the snapshot was taken. Imagine (instead of rollback the snapshot), just copying the original file(s) from there, with content from the time when snapshot was created. This is imho, the killer feature of zfs, maybe matching only by VMS or DragonflyBSD hammer filesystems. They were/are both better at it (`undo`!) but zfs comes closely. And it is broken for months now.

iotku 6y ago
I haven't noticed that issue on Proxmox (been using zfs with it for approx. 6 months). Currently on zfs 0.8.4 (and I've done that previously). Are you using a distro supplied zfs (potentially old) or rolling something more bleeding edge?
- stiray 6y ago
  Just for any case, I would really love to solve this, I accept the fact that it is connected with upgrading the modules but this just is no reason for breaking backward compatibility. root> zpool --version zfs-0.8.4-1 zfs-kmod-0.8.4-1 root> ll /.zfs/snapshot total 0 drwxrwxrwx 2 root root 2 jun 15 08:48 ./ drwxrwxrwx 1 root root 0 jun 10 07:53 ../ root> cat /etc/yum.repos.d/zfs.repo [zfs] name=ZFS on Linux for Fedora $releasever baseurl=http://download.zfsonlinux.org/fedora/$releasever http://download.zfsonlinux.org/fedora/$releasever /$basearch/ enabled=1 metadata_expire=7d gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-zfsonlinux [zfs-source] name=ZFS on Linux for Fedora $releasever - Source baseurl=http://download.zfsonlinux.org/fedora/$releasever/SRPMS/ http://download.zfsonlinux.org/fedora/$releasever/SRPMS/ enabled=0 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-zfsonlinux But nevermind, this is something that was working since zfs as root was brought into FreeBSD (and we are talking about FreeBSD not ZoL), never had issues about it.
znpy 6y ago
> And it is broken for months now. This guy speaks without knowing. I just tried going in my .zfs/snapshot on my CentOS 7 system running kernel 3.10 and ZoL 0.8.3 and it's working. I can list snapshots and cat file off a snapshot.
- deleted 6y ago
  [deleted]
- stiray 6y ago
  After 10+ years of using zfs, I just "might" know something... ;) While your 1 year old versions of ZoL just "might" not prove anything.
  - znpy 6y ago
    if you had actually been using it during the last 1.5/2 years you would know it work. otherwise you're just talking about stuff (zfs on gnu/linux) you know little about. if you use zfs on freebsd then good for you, but that doesn't mean you can spread disinformation about zfs-on-linux. btw: freebsd dropped its own implementation of zfs and is rebasing onto zfs-on-linux (from 2018: https://lists.freebsd.org/pipermail/freebsd-fs/2018-December/027085.html https://lists.freebsd.org/pipermail/freebsd-fs/2018-December...). that's how good zfs-on-linux is.
    - stiray 6y ago
      Just update your outdated ZoL to latest version. Than we can talk. And you might just agree.
      - laumars 6y ago
        I run ZFS on both Linux and FreeBSD. On Linux I compile from the latest releases. I’ve honestly not noticed any issues either. Are you absolutely sure this isn’t something you’ve misconfigured yourself? For what it’s worth, I do prefer FreeBSD over Linux but not not for any reasons relating to ZFS.
- 6y ago
eqvinox 6y ago
$ cat /saspool/debian/master-buster/.zfs/snapshot/ci/etc/issue Debian GNU/Linux 10 \n \l ZFS 0.8.4 on Linux 5.4.43 — just as a data point in case you're trying to track this down. Both built from source, no distro patches. (Yes my "tank" is named "pool"; /saspool/debian/master-buster is a template for my containers, "ci" is one of the containers.)
layoutIfNeeded 6y ago
Works for me on Debian Unstable... sudo zpool --version zfs-0.8.4-1 zfs-kmod-0.8.4-1 uname -a Linux xxx 5.6.0-2-amd64 #1 SMP Debian 5.6.14-1 (2020-05-23) x86_64 GNU/Linux

deleted 6y ago

[deleted]